1025255000 has 160 divisors (see below), whose sum is σ = 2996040960. Its totient is φ = 319440000.

The previous prime is 1025254987. The next prime is 1025255003. The reversal of 1025255000 is 5525201.

It is a super-2 number, since 2×1025255000² = 2102295630050000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025255003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 383669 + ... + 386331.

It is an arithmetic number, because the mean of its divisors is an integer number (18725256).

Almost surely, 2^1025255000 is an apocalyptic number.

1025255000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025255000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498020480).

1025255000 is an abundant number, since it is smaller than the sum of its proper divisors (1970785960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025255000 is a wasteful number, since it uses less digits than its factorization.

1025255000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707 (or 2688 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1025255000 is about 32019.6033704354. The cubic root of 1025255000 is about 1008.3484428824.

The spelling of 1025255000 in words is "one billion, twenty-five million, two hundred fifty-five thousand".